EP0551573A3 - Angle modulator, particularly for digital radio transmission - Google Patents
Angle modulator, particularly for digital radio transmission Download PDFInfo
- Publication number
- EP0551573A3 EP0551573A3 EP19920117586 EP92117586A EP0551573A3 EP 0551573 A3 EP0551573 A3 EP 0551573A3 EP 19920117586 EP19920117586 EP 19920117586 EP 92117586 A EP92117586 A EP 92117586A EP 0551573 A3 EP0551573 A3 EP 0551573A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- radio transmission
- digital radio
- angle modulator
- modulator
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0966—Modifications of modulator for regulating the mean frequency using a phase locked loop modulating the reference clock
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/0941—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation at more than one point in the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
- H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
- H03C3/095—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation to the loop in front of the voltage controlled oscillator
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/12—Modulator circuits; Transmitter circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
- H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
- H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2035—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers
- H04L27/2042—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers with more than two phase states
- H04L27/2046—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers with more than two phase states in which the data are represented by carrier phase
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
- H03C2200/0004—Circuit elements of modulators
- H03C2200/0029—Memory circuits, e.g. ROMs, RAMs, EPROMs, latches, shift registers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
- H03C2200/0037—Functional aspects of modulators
- H03C2200/0058—Quadrature arrangements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C2200/00—Indexing scheme relating to details of modulators or modulation methods covered by H03C
- H03C2200/0037—Functional aspects of modulators
- H03C2200/0079—Measures to linearise modulation or reduce distortion of modulation characteristics
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4200816A DE4200816A1 (en) | 1992-01-15 | 1992-01-15 | FREQUENCY AND PHASE MODULATOR FOR DIGITAL MODULATORS OR DIGITAL TRANSMISSION, IN PARTICULAR FOR RADIO TRANSMISSION |
DE4200816 | 1992-01-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0551573A2 EP0551573A2 (en) | 1993-07-21 |
EP0551573A3 true EP0551573A3 (en) | 1993-09-08 |
Family
ID=6449520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19920117586 Ceased EP0551573A3 (en) | 1992-01-15 | 1992-10-15 | Angle modulator, particularly for digital radio transmission |
Country Status (5)
Country | Link |
---|---|
US (1) | US5467373A (en) |
EP (1) | EP0551573A3 (en) |
JP (1) | JPH05347642A (en) |
DE (1) | DE4200816A1 (en) |
FI (1) | FI925917A (en) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6366620B1 (en) | 1994-12-13 | 2002-04-02 | Hughes Electronics Corporation | VSAT system |
DE69529729D1 (en) | 1994-12-13 | 2003-04-03 | Hughes Electronics Corp | High precision and low phase noise synthesizer with vector modulator |
FI98330C (en) | 1994-12-15 | 1997-05-26 | Nokia Mobile Phones Ltd | UHF synthesizer |
US5812604A (en) * | 1996-07-16 | 1998-09-22 | Scientific-Atlanta, Inc. | Constant envelope continuous phase frequency shift key modulation apparatus and method at radio frequencies |
GB9617313D0 (en) * | 1996-08-17 | 1996-09-25 | Cedardell Ltd | Transmitter controller |
US5960405A (en) | 1997-02-05 | 1999-09-28 | Fox Enterprises, Inc. | Worldwide marketing logistics network including strategically located centers for frequency programming crystal oscillators to customer specification |
US5952890A (en) * | 1997-02-05 | 1999-09-14 | Fox Enterprises, Inc. | Crystal oscillator programmable with frequency-defining parameters |
US5825257A (en) * | 1997-06-17 | 1998-10-20 | Telecommunications Research Laboratories | GMSK modulator formed of PLL to which continuous phase modulated signal is applied |
US6002923A (en) * | 1997-11-07 | 1999-12-14 | Telefonaktiebolaget Lm Ericsson | Signal generation in a communications transmitter |
US6301310B1 (en) | 1998-12-14 | 2001-10-09 | Hughes Electronics Corporation | Efficient implementation for systems using CEOQPSK |
JP2000286915A (en) * | 1999-03-31 | 2000-10-13 | Toshiba Corp | Signal modulation circuit and method |
US6631169B1 (en) * | 1999-12-27 | 2003-10-07 | Syncomm Technology Corporation | Apparatus and method for GMSK baseband modulation based on a reference phase to be simplified |
DE10100555B4 (en) * | 2001-01-09 | 2004-05-27 | Texas Instruments Deutschland Gmbh | Circuit arrangement for generating a phase-locked frequency-modulated carrier frequency signal |
FR2836612B1 (en) * | 2002-02-22 | 2004-10-15 | Thales Sa | METHOD FOR TRANSMITTING DIGITAL DATA USING A FREQUENCY MODULATOR AND CORRESPONDING MODULATOR |
DE102004005503B4 (en) * | 2004-01-30 | 2009-11-26 | Atmel Automotive Gmbh | Method for frequency conversion and receiver |
TWI278184B (en) * | 2005-05-23 | 2007-04-01 | Novatek Microelectronics Corp | A modulation method and apparatus with adjustable divisors of the dividers in phase-locked loop |
JP2007221773A (en) * | 2006-01-19 | 2007-08-30 | Matsushita Electric Ind Co Ltd | Pll modulation circuit, radio transmitting apparatus, and radio communication apparatus |
EP1983711B1 (en) | 2007-04-17 | 2019-06-12 | Sivantos GmbH | Digital phase modulator and corresponding method |
CN104363013B (en) * | 2014-09-02 | 2018-06-08 | 中国科学院国家授时中心 | A kind of FV convertor of low additional noise |
WO2017039373A1 (en) * | 2015-09-02 | 2017-03-09 | Lg Electronics Inc. | Method and apparatus for indicating center frequency offset for narrowband ue in wireless communication system |
US11095295B2 (en) | 2018-06-26 | 2021-08-17 | Silicon Laboratories Inc. | Spur cancellation for spur measurement |
US10840897B1 (en) * | 2019-10-31 | 2020-11-17 | Silicon Laboratories Inc. | Noise canceling technique for a sine to square wave converter |
US11038521B1 (en) | 2020-02-28 | 2021-06-15 | Silicon Laboratories Inc. | Spur and quantization noise cancellation for PLLS with non-linear phase detection |
US11316522B2 (en) | 2020-06-15 | 2022-04-26 | Silicon Laboratories Inc. | Correction for period error in a reference clock signal |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2012506A (en) * | 1978-01-14 | 1979-07-25 | Int Standard Electric Corp | Angle-modulation oscillator |
EP0408238A2 (en) * | 1989-07-08 | 1991-01-16 | Plessey Semiconductors Limited | A frequency synthesiser |
US5021754A (en) * | 1990-07-16 | 1991-06-04 | Motorola, Inc. | Fractional-N synthesizer having modulation spur compensation |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1473202A (en) * | 1966-01-25 | 1967-03-17 | Cit Alcatel | Regularly scaled frequency generator in a very wide band |
NL6702110A (en) * | 1967-02-11 | 1968-08-12 | ||
US4052672A (en) * | 1976-07-22 | 1977-10-04 | Motorola, Inc. | Extended phase-range, high fidelity modulator arrangement |
JPS55663A (en) * | 1978-06-19 | 1980-01-07 | Toshiba Corp | Frequency synthesizer |
JPS621322A (en) * | 1985-06-27 | 1987-01-07 | Nec Corp | Frequency synthesizer |
DE3533222A1 (en) * | 1985-09-18 | 1987-03-19 | Schlumberger Messgeraete Gmbh | CIRCUIT ARRANGEMENT WITH A DC VOLTAGE-MODULABLE PHASE CONTROL LOOP |
US4654859A (en) * | 1986-04-09 | 1987-03-31 | Racal Data Communications Inc. | Frequency synthesizer for frequency hopping communication system |
US4739288A (en) * | 1987-03-27 | 1988-04-19 | Teletec Corporation | Combined phase and frequency modulator for modulating an information signal |
JP2841693B2 (en) * | 1990-04-19 | 1998-12-24 | 日本電気株式会社 | PLL frequency synthesizer |
DE4028565A1 (en) * | 1990-09-08 | 1992-03-12 | Philips Patentverwaltung | OSCILLATOR WITH PHASE CONTROL CIRCUIT |
-
1992
- 1992-01-15 DE DE4200816A patent/DE4200816A1/en not_active Withdrawn
- 1992-10-15 EP EP19920117586 patent/EP0551573A3/en not_active Ceased
- 1992-12-29 FI FI925917A patent/FI925917A/en unknown
-
1993
- 1993-01-14 JP JP5004771A patent/JPH05347642A/en active Pending
- 1993-01-15 US US08/005,890 patent/US5467373A/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2012506A (en) * | 1978-01-14 | 1979-07-25 | Int Standard Electric Corp | Angle-modulation oscillator |
EP0408238A2 (en) * | 1989-07-08 | 1991-01-16 | Plessey Semiconductors Limited | A frequency synthesiser |
US5021754A (en) * | 1990-07-16 | 1991-06-04 | Motorola, Inc. | Fractional-N synthesizer having modulation spur compensation |
Non-Patent Citations (1)
Title |
---|
FUNKSCHAU Bd. 62, Nr. 5, 23. Februar 1990, MUNCHEN, DE Seiten 60 - 65 DRUDE S.: 'Kompakter Chipsatz für preiswerte Funktelefone' * |
Also Published As
Publication number | Publication date |
---|---|
EP0551573A2 (en) | 1993-07-21 |
FI925917A0 (en) | 1992-12-29 |
JPH05347642A (en) | 1993-12-27 |
DE4200816A1 (en) | 1993-07-22 |
FI925917A (en) | 1993-07-16 |
US5467373A (en) | 1995-11-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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AK | Designated contracting states |
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17P | Request for examination filed |
Effective date: 19940217 |
|
17Q | First examination report despatched |
Effective date: 19990906 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 20021121 |